A jet engine receives a flow of 500 fts air at 10 lbfin2 40

Question

1. A meteorite melts and burns up at a temperature of 5500 R. If it hits air at 0.75 lbf/ in.², 90 R, what velocity should it have to reach this temperature?

2. A jet engine receives a flow of 500 ft/s air at 10 lbf/in.², 40 F, inlet area of 7 ft² with an exit at 1500 ft/s, 10 lbf/in.², 1400 R. Find the mass flow rate and thrust.